High frequency cable



Filed Nov. 17, 1931 amzrz N001.

HIRE 64 5 INVENTOR tUDWlG WALT R" BY Na AfTdRNW Patented Jan. 8, i935PATENT OFFICE .031,! man mousse! cam Ludwig Walter, Berlin,

Teiefnnken Guellsehalt G rmany. "l ner to flircDrahi-loae'l'elegraphlemhmBerlimGermanmaoernoratien of Germany ApplicationNovember 11, m1, Serial No. mm

- In Germany November 2!, 1830 2 Claim. (Cl. 17H) This invention relatesto electric cables and more particularly to cables adapted for thetransmission of high frequency currents.

The object of this invention is a special em- .bodiment' and form ofconstruction of a high frequency cable. According to the presentimprovement the materialused for insulating the inner conductor from theouter conductor consists oi quartz wool or some similar elasticsubstance. The use of quartz wool is particularly recommendable wheneverthe inner and the outer conductors are flexible in nature inasmuch asthe radio irequency cable can then be flexed u a whole just like astandard cable and can thus'be easily wound or rolled up. Quart: woolfurthermore constitutes a good insulator whose phase (angle) diflerenceis of a particular order oi magnitude iortheirequencieshereeomingintoconsideration. The inner conductor may most suitably consist of strandedwire, while the outer inlay consist, if desired. oi. a wire gauze ormetal One embodiment of the invention is illustrated in the attacheddrawing where T the" inner conductor, A the outer, and G the quartzwool.

I claim:

LInasystemcarrying radioirequencycurrents, a flexible cable transmittingsaid currents, said cable comprising concentric inner and outerconductors. said conductors being insulated from each other by quartzwool. v I

2. Ina system carrying radio frequency currents, a cable comprisinginner and outer flexible conductors.- said outer conductor beingcomposed of wire gauze, the said inner conductor being composed ofstranded wire, both 01' said conductors being insulated from each otherby quartz wool.

Lunwra WALTER. so

